Wrist watch



June 20, 1939. w sc TZ 2,163,220

WRIST WATCH Filed May 4. 1957 I N v E N TOR WERNER SCHMITZ BY W, *JZW/w-M AT ORIYE 5 Patented June 20, 1939 UNITED STATES PATENT OFFICE Application May 4, 1937, Serial No. 140,761 In Switzerland June 5, 1936 2 Claims.

The present invention relates to wrist watches provided with lugs on their underside to receive wrist bands.

Wrist watches are often worn with coloured 5 wrist bands and it is, therefore, more than ever desirable to be able to change the wrist band easily so that one can be worn to match the clothes.

Various methods of changing wrist bands have been suggested often involving a pair of fastenings for each colour or type of band; in other proposals enlarged end portions of the straps were to be used or projections, hooks or lugs formed upon one section of the casing were to cooperate with projections, hooks or lugs formed upon another section of the casing to form wrist strap engaging lugs when the sections were assembled together.

In arrangements according to the present invention a lug is carried at each end of a case band, preferably the upper case band of the watch. A bight of the loop of a wrist cord or the like lies in a recess in the underside of the lug and a closing member is provided to hold it in position. The actual closure is thus formed without dependence upon cooperation between two sections of the case, although in some forms the closing member may be positively secured in its closing position when the sections of the watch are assembled.

The closing member may conveniently take the form of a flap or finger which can be snapped, screwed, or slid into operative position to close the mouth of the recess. It may, if desired, be spring controlled to bring it to or hold it in the closing position.

The invention is illustrated by four simple embodiments which will now be described by way of example with reference to the accompanying drawing, in which:

Figure 1 represents a side elevational view of a watch constructed in accordance with the invention,

Figures 2, 3 and 4 represent similar side views of modifications, and

Figure 5 represents a plan View seen from above of the watches shown in Figures 1 to 4 on a reduced scale.

Referring to the drawing, the case band I of the watch, which also forms the bezel, is interengaged in a normal way with the back cover 2. The case band I is formed at each end with an outwardly extending lug 3 which is inclined somewhat downwardly and has an arcuate notch 5 formed in its underside shaped to receive the looped ends of a wrist band 4 of cord type. To retain the cord in the notch, a suitable member bars the outlet from the latter. In the form shown in Figure 1 the mouth of the notch is arranged to be closed by a springy flap 6 which is hinged at the outer end of the lug on a pivot l. The free end of the flap '6 is hooked and in the closed position it engages a pin 8 provided on the inner end of the lug, as shown on the right hand side of Figure 1. In order to insert or remove a cord the flap 6 is opened, as shown on the left hand side of Figure 1; this may be done by pulling the cord downwardly against it.

Figure 2 shows a form in which the closing member takes the form of a screw 9 which passes across the mouth of the notch 5 as shown, and the head is received in a recess in the end of the lug. Instead of a headed screw, a conical pin or peg could be used.

Figure 3 shows a peg i0 pressed into slots provided at the sides of the notch in the lug. A spring controlled slide might be used to close the mouth of the notch automatically.

In the form shown in Figure 4 a hinged flap 6' is used, having a bent free resilient end 6" which is secured in the closed position by clamping it in a notch between the case band I and back cover 2.

The possibility of being able to change easily and quickly the wrist band of a watch is a factor tending to increase the sale of such watches. No special tools are necessary to change wrist bands on Watches of the present invention; the watch dealer or owner can easily make the change himself.

What I claim is:

1. In a wrist watch, a case having a removable cover, lugs projecting from opposite sides of the case and each provided with a recess in its under side adapted to receive an end of a wrist band, said case being provided with an open notch, on each side thereof under the corresponding one of said lugs and opening into the corresponding recess, adapted to be closed by said cover when the latter is in closed position on said case, and a displaceable barring member for closing the recess in each lug, each of said barring members being secured at one end to the outer extremity of its associated lug and having its other end extending into the notch on the case and secured therein by said case cover.

2. In a Wrist watch adapted to be secured to the wrist by a band provided with loops at its extremities, a case having a removable cover, lugs projecting from opposite sides of the case and each provided with a recess in its under side adapted to receive a loop of the Wrist band, said case having openings to receive barring members, and a displaceable barring member for closing the recess in the under side of each lug, each barring member having one end secured to the outer extremity of its associated lug and having its other end engaged in the barring member receiving opening of the case, said lugs and barring members having smooth surfaces to avoid being caught by knitted fabrics, lace and similar materials. v

WERNER SCHMITZ. 

